When baking soda, sodium hydrogencarbonate (NaHCO3\text{NaHCO}_3NaHCO3), is heated during baking, it decomposes to form sodium carbonate (Na2CO3\text{Na}_2\text{CO}_3Na2CO3), water vapour, and carbon dioxide gas according to the equation:
2NaHCO3(s)→Na2CO3(s)+H2O(g)+CO2(g) 2\text{NaHCO}_3\text{(s)} \rightarrow \text{Na}_2\text{CO}_3\text{(s)} + \text{H}_2\text{O(g)} + \text{CO}_2\text{(g)} 2NaHCO3(s)→Na2CO3(s)+H2O(g)+CO2(g)A 12.60 g12.60\text{ g}12.60 g sample of sodium hydrogencarbonate (Mr=84.0M_r = 84.0Mr=84.0) is completely decomposed by heating.
Calculate the mass, in grams, of sodium carbonate (Mr=106.0M_r = 106.0Mr=106.0) formed.
